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Super Precision Angular Contact Ball Bearings 7048 ACD/P4ADBB

Super Precision Angular Contact Ball Bearings 7048 ACD/P4ADBB

The 7048 ACD/P4ADBB is a super precision angular contact ball bearing with a 240mm bore and 360mm outer diameter, crafted from durable chrome steel. Its 25° contact angle and matched pair design (DB arrangement) ensure stable performance under angular loads.

This bearing handles radial loads up to 118,575 lbf and spins smoothly at 7500 RPM, thanks to its phenolic cage and lubricated design. It operates reliably in temperatures from -30°C to 110°C.

The open seal allows easy maintenance, while the P4A tolerance class guarantees high precision. Weighing 34.2kg, it’s robust yet suitable for precision applications like machine tool spindles or high-speed industrial equipment.

Interchangeable with SKF bearings, it offers a practical solution for replacements or upgrades. The light preload (Class B) ensures smooth operation without excessive friction.

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Product Parameters

  • Part Number 7048 ACD/P4ADBB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 240 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 360 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 112 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 38.1 mm
  • Ball Qty 22
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 118575 lbf
  • Static Radial Load 209250 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 7500 rpm
  • Weight 34.2 kg
Super Precision Angular Contact Ball Bearings 7048 ACD/P4ADBB dimension drawing
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Features

Performance Features of 7048 ACD/P4ADBB Bearing

7048 ACD/P4ADBB Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls provide strong resistance to dynamic radial loads up to 118,575 lbf.

The phenolic cage ensures smooth operation, reducing friction and wear even at high speeds.
With a maximum speed of 7,500 rpm, it balances precision and durability in demanding conditions.

7048 ACD/P4ADBB Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its matched arrangement of two bearings enhances stability and performance in precision applications.

Application

Industrial Uses of 7048 ACD/P4ADBB Bearing
7048 ACD/P4ADBB Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of two bearings provides stability for heavy cutting operations.

Where Is 7048 ACD/P4ADBB Bearing Used?
You’ll often find 7048 ACD/P4ADBB Bearing in aerospace applications, such as helicopter rotor systems, due to its ability to handle both radial and axial loads. Its phenolic cage also reduces friction at high speeds.

Built for Heavy-Duty Use: 7048 ACD/P4ADBB Bearing
In wind turbine gearboxes, 7048 ACD/P4ADBB Bearing’s chrome steel construction withstands constant stress from variable loads. The P4A tolerance class ensures minimal vibration for smoother energy generation.

Medical vs Industrial: Where 7048 ACD/P4ADBB Bearing Excels
While 7048 ACD/P4ADBB Bearing suits industrial presses, its precision also benefits medical imaging devices like CT scanners. The light preload maintains positioning accuracy during sensitive procedures.

Automotive vs Aerospace: Applications of 7048 ACD/P4ADBB Bearing
7048 ACD/P4ADBB Bearing supports performance car transmissions with its high-speed capability. In aircraft landing gear, its durability handles intense impact loads during touchdown.

Q&A

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